JavaLikeScript - A standalone, extensible JavaScript shell including both native and JavaScript libraries.

GLUEscript - A standalone JavaScript shell for writing cross-platform JavaScript applications. It can use wxWidgets for GUI apps, and was formerly called wxJavaScript.

jspl - A standalone JavaScript shell enhanced by Perl. Can use perl modules directly from JavaScript: DBI for database integration, GTK2 for GUI apps, POSIX for system programming, etc. The best of CPAN now for JavaScript programmers.

List of JavaScript shells

The following JavaScript shells work with Mozilla.

Firefox has a built-in Javascript console, called Scratchpad, starting in version 6.